Velocity dependence of doubly scattered speckles produced by a cascade of two moving diffusers

Takashi Okamoto; Toshimitsu Asakura

doi:10.1117/12.34844

1 July 1990 Velocity dependence of doubly scattered speckles produced by a cascade of two moving diffusers

Takashi Okamoto, Toshimitsu Asakura

Proceedings Volume 1319, Optics in Complex Systems; (1990) https://doi.org/10.1117/12.34844
Event: 15th International Optics in Complex Systems, 1990, Garmisch, Germany

Abstract

Dynamic speckles always appear when a coherent light illuminates dense scattering media in motion. These media usually produce multiply-scattered speckles whose statistical properties are considered to be different from those of singly-scattered norial speckles. Several theoretical studies13 have been carried out for doubly- or multiplyscattered speckles. However, most of these analyses deal with speckles in the far field or image speckles in focus, and few studies have been conducted on the effect of defocus on the dynamic properties of doubly-scattered speckles. In the present paper we investigate the dynamic properties of time-varying speckles formed in an imaging system by the light passing through a sequential pair of two moving diffusers. The space-time correlation function for the Image speckle patterns is derived to estisate the influence of the motion of each diffuser on a fluctuating speed of the speckle intensity. Several interesting features have been deduced.

Citation Download Citation

Takashi Okamoto and Toshimitsu Asakura "Velocity dependence of doubly scattered speckles produced by a cascade of two moving diffusers", Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); https://doi.org/10.1117/12.34844

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available